Well, the (psuedo) code I posted before is how I did it. What went wrong when you tried it?
DId you try something like this? (If I understand your code correctly)
DId you try something like this? (If I understand your code correctly)
' I dont know what value gamearea[] uses for non filled blocks. I assume -1 but change that to whatever value you use... if gamearea[tprXloc,tprYloc] > -1 and gamearea[tplXloc,tplYloc] > -1 and gamearea[blXloc,blYloc] > -1 and gamearea[brXloc,brYloc] > -1 then set_tiles() endif